Petterdite
砷铅矿
🗣️ 情景例句
At 4, but I have to leave by 3:00 to get there on time.
四点，不过我三点必须离开，才能准时到那里。
The little boy grew red at the sight of the cute girl.
那个男孩子见到可爱的女孩而满脸通红。
She stood up and took his arm.
她站起来，拉住他的手臂。